title: Xenotransplantation literature update October-December, 2003.
mesh_terms: D000818:Animals; D017690:Cell Transplantation / Q000379:methods; D006084:Graft Rejection; D006801:Humans; D014183:Transplantation, Heterologous / Q000009:adverse effects / Q000276:immunology / Q000639:trends*; D015047:Zoonoses